The edges of the form block should be lined up to give clean borders for your concrete overlay.
Concrete overlay over ceramic tile.
Another and i think better way would be to use a self leveling concrete that can be aplied in a much thinner coat and if head room is a problem would be of help.
Lightweight cement based overlays mimic stone brick and other wall textures placing overlays over tile floors by chris sullivan chemsystems inc.
It is helpful to measure and calculate this ahead of time.
Step 4 blend concrete.
If you are doing a thick overlay you need to lay an additional layer to apply over the top of the first layer you just poured.
Move the sander back and forth.
Use a paintbrush to spread the adhesive.
If you were to use conventional concrete i would say you should pour a minimun of 3 inches both for strength and to ease leveling.
Roughen the existing tile surface with 60 grit sandpaper on an orbital sander.
It allows installation of concrete directly over ceramic porcelain and quarry tiles.
Concrete resurfacing is made possible with the advent of calcium aluminate cement technology in self leveling concrete.
Concrete resurfacing mix is the product you ll need for the overlay.
It comes powdered and is often.
How to do a concrete overlayment on tile countertops prepare the tile.
Pour concrete sections one at a time that are approximately 1 10 of the total area of the tile you are working with.
How to do a concrete overlayment on tile countertops step 1.
Apply a smooth thin layer of concrete bonding adhesive to the tiles.